Karna, P. Cytological Studies on Two Species, Xanthium Strumarium Linn. and Bidens Pilosa Linn. Var. Minor (Blume) Sherff (Asteraceae-Heliantheae) from Nepal. Int J Appl Sci Biotechnol 2017, 5 (1), 66-71. https://doi.org/10.3126/ijasbt.v5i1.17010.